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Head to head · Keyword data · October 2026 research run

DataForSEO vs Keywords Everywhere API + MCP

DataForSEO scores 64.9 (B) on agent readiness against Keywords Everywhere API + MCP's 47.2 (D), and leads in 6 of 7 scored categories. Both do keyword data.

Best SEO and search visibility data for AI agents · All 45 seo comparisons

DataForSEODataForSEO OÜ · HTTP API B64.9/100#333 of 950 Keywords Everywhere API + MCPKeywords Everywhere (Axeman Technology Solutions LLP) · HTTP API D47.2/100#836 of 950

Which one, for what

DataForSEO B

Good for Agents and products that need raw SEO data in bulk at a low unit price, across SERPs, keyword volumes, backlinks, ranked keywords and traffic estimates, and that can work with a task queue.

Ahead on

  • Reliability, 84 against 42
  • Schema & documentation, 86 against 48
  • Agent ergonomics, 84 against 54
  • Payments & pricing, 40 against 20
  • Maintenance & community, 82 against 63
  • Transparency & trust, 74 against 68

Also in its favour

  • Runs on your own machine

Watch for

The REST API takes one account-wide login and password over HTTP Basic, with no scopes or read-only credential

Keywords Everywhere API + MCP D

Good for An agent that needs Google Keyword Planner volume, CPC and competition for lists of keywords at a low price per keyword, plus keyword ideas and a quick view of a site's ranking keywords, traffic estimate and top backlinks.

Also in its favour

  • No incidents deducted, where DataForSEO loses 6 points for them

Watch for

No free credits or trial. Data calls need an annual plan, from $84 for 100,000 credits that expire after a year

Score by category

CategoryWeight this runDataForSEOKeywords Everywhere API + MCPEdge
Reliability16%208442DataForSEO +42
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28648DataForSEO +38
Agent ergonomics13%16.28454DataForSEO +30
Security & auth14%17.54547Keywords Everywhere API + MCP +2
Payments & pricing10%12.54020DataForSEO +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88263DataForSEO +19
Transparency & trust7%8.87468DataForSEO +6
Negative events≤15-60
Total64.9 · B47.2 · D

Facts side by side

FactDataForSEOKeywords Everywhere API + MCP
KindHTTP APIHTTP API
VendorDataForSEO OÜKeywords Everywhere (Axeman Technology Solutions LLP)
Hosted endpointhttps://api.dataforseo.com/v3/https://api.keywordseverywhere.com
TransportsHTTP, Streamable HTTP, stdioHTTP, Streamable HTTP
AuthOAuth or keyOAuth or key
PricingPay per usePaid
Price for keyword data$0.06 per call$0.0008 per record
x402nono
LicenceProprietary service under DataForSEO's terms of service. The MCP server is Apache-2.0 and the Python client is MITProprietary service under the Keywords Everywhere Terms of Service. The vendor's n8n community node on npm is MIT
Tools exposed414
Read-only variant documentednoyes
llms.txtyesno
MCP registrynot listedcom.keywordseverywhere/keywords-everywhere
Last release2026-10-062026-09-10
Terms last updated2026-06-122023-05-30
Privacy policy last updated2026-07-242025-08-15
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textnot found in the text
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waivernot found in the textnot found in the text
Popularity251 stars, 32k npm/wk, 50k PyPI/wk7 npm/wk

Verdicts

DataForSEO

Per-request prices are public for every endpoint, a $1 credit and a free sandbox need no payment, and the status feed shows no incident since 15 June 2026. The REST API accepts one account-wide login and password with no scopes, and no SLA or security certification was found in the reviewed pages.

Keywords Everywhere API + MCP

Fourteen read-only lookups with a published credit cost each, available over REST and a hosted MCP server listed in the official registry. Data needs an annual plan from $84, with no trial. No OpenAPI file, no REST rate limit and no API changelog were found, and the status page shows outages on seven of the last 90 days.

Before you call either

DataForSEO

  1. Check status_code on the response and on every task. HTTP 200 is returned for most errors, and 20000 or 20100 means success
  2. Append .ai to Live and Task GET paths to get the trimmed response. The MCP api_request tool does this unless noAiMode is true
  3. Build against https://sandbox.dataforseo.com/v3/ first. It is free and returns dummy data in the production structure
  4. Use the standard queue (task_post, then task_get or a postback_url) for bulk work. Live Google Ads endpoints allow 12 requests a minute
  5. Ask the account owner to set daily cost limits and an IP whitelist, since the credentials carry the whole prepaid balance

Keywords Everywhere API + MCP

  1. Send the key as Authorization: Bearer <key> to https://api.keywordseverywhere.com/v1. The same key works on the MCP server
  2. Call GET /v1/account/credits (free) before a large pull. A short balance returns 402 with 402 Insufficient Credits
  3. Set num on domain, URL and backlink lookups. It accepts 1 to 10,000 and every returned row is charged 1, 2 or 5 credits
  4. Batch up to 100 keywords in one get_keyword_data call and set country. Without it the figures are global
  5. Keep MCP use under 120 tool calls a minute per account, and wait a minute after a Too many requests error

Questions

Which is better for AI agents, DataForSEO or Keywords Everywhere API + MCP?

DataForSEO scores 64.9 (B) on agent readiness against Keywords Everywhere API + MCP's 47.2 (D), and leads in 6 of 7 scored categories.

Do DataForSEO and Keywords Everywhere API + MCP need an API key?

Both take an API key or an OAuth sign-in.

Can an agent call DataForSEO and Keywords Everywhere API + MCP without installing anything?

Yes. DataForSEO has a hosted endpoint at https://api.dataforseo.com/v3/ and Keywords Everywhere API + MCP at https://api.keywordseverywhere.com.

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